Earlier quoted context omitted.
Increasing the money supply causes inflation. Rich people don't just put their money under their mattress. They invest it which means it's being given to other people who use it to buy things.
I understand why that might cause inflation. The projected cost is £55b, is this really enough to put the country in an inflationary meltdown? IMHO the problem is that none of these measures actually guarantee (or even promote) economic growth and the realisation that the UK has economic illiterate leaders it's what's freaking the markets.
And I use "leaders" with scornful irony